Abstract

SILVA QUISPE, Jhonn Cesar. SPONTANEOUS SEDIMENTATION IN TUBE TECHNIQUE FOR ENTEROPARASITOSIS DIAGNOSIS IN PRIMARY HEALTH-CARE CENTERS. Rev. Méd. La Paz [online]. 2017, vol.23, n.2, pp.13-19. ISSN 1726-8958.

Objective To evaluate the effectiveness of "Spontaneous sedimentation in tube technique - 45 min" as alternative to Modified Ritchie Concentration Technique and Direct Examination. Design Transversal, descriptive, ecological and comparative study. Triple-blind experiment. Material and methods A total of 384 feces samples of children aged 7 to 10 years old were collected. Samples were obtained from three schools chosen at random in Cochabamba city. Statistical analysis with OpenEpi version 3.01 was performed. Results Áscaris lumbricoides 142 (36.9%) and Trichuris trichura 89 (23.1%) were the most frequently observed parasites among Helminths. Entamoeba coli 228 (59.3%) and Iodomoeba butsclii 86 (22.3%) were more frequently observed among Protozoa. The "Spontaneous sedimentation in tube technique - 45 min" (TSET) detected polyparasitism and monoparasitism similar to Modified Ritchie Concentration Technique (MRCT). Polyparasite samples displayed a higher frecuency of Entamoeba histolytica and Giardia lamblia parasites, and among Helminths it was found two cases of Ascaris lumbricoides and one of Himenolepys nana. The proposed technique presented a sensitivity and negative predictive value of 100%, specificity 70.5%, and positive predictive value 97.2%. Kappa concordance coefficient between TSET and Ritchie Technique was 0.820, (p <0.01) and Kappa = 1 (p <0.01) at2 hours of rest. Conclusions Using this technique within 45 minutes, as an alternative test to Ritchie Technique, is recommended.

Keywords : Parasitosis; Spontaneous Sedimentation; Sensibility.

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